A Starbucks customer going only by Andrew claims he's ordered the coffee chain's biggest, most expensive drink to date.

The Sexagintuple Vanilla Bean Mocha Frappuccino cost $54.75, according to a receipt of the purchase he posted on Twitter.

But because Andrew is a Gold member of the Starbucks loyalty program, he got the concoction for free.

Starbucks confirmed the coffee colossus is the real deal.

But a spokesperson told The Huffington Post that while it does allow customers to customize free beverages earned through its reward program, this one "was excessive and something that we do not encourage."

Calorie counts of Starbucks drinks

Starbucks is now posting calorie counts to its menu. Find out how "bad" your favorite drink is.

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Prepare for a jolt: Starbucks has announced it's adding calorie counts to its menu boards. Here's a look at just how many calories are in some of your favorite Starbucks drinks. Calorie counts are for Grande sizes and include whipped cream, when available, and 2 percent milk, which is now the Starbucks standard.

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